Abstract: An inductor device for a printed wiring board has an insulation layer having a first penetrating hole penetrating through the insulation layer, a magnetic core structure including a magnetic material filled in the first penetrating hole through the insulation layer such that the magnetic core structure including a first magnetic body layer formed in the first penetrating hole is formed through the insulation layer, and a conductor layer formed on the insulation layer and having an inductor pattern such that the inductor pattern is surrounding the circumference of the magnetic core structure.

Abstract: A wiring board includes a substrate having a first penetrating hole penetrating through the substrate, a first through-hole conductor formed on the inner wall of the first penetrating hole, a filler filled inside the first conductor and forming a second penetrating hole, and a second through-hole conductor formed in the second penetrating hole, a first conductive circuit formed on a first surface of the substrate; a second conductive circuit formed on a second surface of the substrate; a first conductive portion formed on one end of the second penetrating hole, and a second conductive portion formed on the opposite end of the second penetrating hole. The first conductor is connecting the first and second circuits. The second conductor is connecting the first and second conductive portions. The first circuit has the thickness which is set greater than the thickness of the first conductive portion.

Abstract: A multilayer printed wiring board has a core substrate including first insulation layers, first conductive patterns formed on the first insulation layers, and first via conductors formed through the first insulation layers and connecting the first conductive patterns, and a buildup layer formed on the core substrate and including second insulation layers, second conductive patterns formed on the second insulation layers, and second via conductors formed through the second insulation layers and connecting the second conductive patterns. Each of the first insulation layers includes an inorganic reinforcing fiber material, each of the second insulation layers does not include an inorganic reinforcing fiber material, and the core substrate includes an inductor having the first conductive patterns and the first via conductors.

Abstract: A printed wiring board includes a first insulation layer, a first conductive pattern formed on a first surface of the first insulation, a second conductive pattern formed on a second surface of the first insulation on the opposite side with respect to the first surface of the first insulation, a first buildup structure formed on the first surface of the first insulation and the first pattern, the first buildup structure including insulation layers and conductive patterns, and a second buildup structure formed on the second surface of the first insulation and the second pattern, the second buildup structure including insulation layers and conductive patterns. The second pattern and the patterns in the second buildup structure form an inductor, and the first and second patterns are positioned such that the distance between the first and second patterns in the thickness direction of the first insulation is set 100 ?m or greater.

Abstract: A printed wiring board has a packaging substrate having multiple pads, and a transmission substrate mounted on the multiple pads of the packaging substrate. The packaging substrate has a pad group constituted of pads which mount an electronic component, the multiple pads mounting the transmission substrate includes a first pad positioned in a peripheral portion of the packaging substrate and a second pad positioned between the first pad and the pad group, the second pad is electrically connected to a signal pad of the pads in the pad group, and the transmission substrate includes a horizontal wiring which electrically connects the second pad and the first pad and which transmits a signal between the second pad and the first pad.

Abstract: A printed wiring board wiring board including a substrate having a first penetrating hole and multiple second penetrating holes formed around the first penetrating hole, a first conductive portion and a second conductive portion formed on one surface of the substrate, a third conductive portion and a fourth conductive portion formed on the opposite surface of the substrate, a first through-hole conductor formed in the first penetrating hole and connecting the first conductive portion and the third conductive portion, and multiple second through-hole conductors formed in the second penetrating holes and connecting the second conductive portion and the fourth conductive portion. The first through-hole conductor and the second through-hole conductors are made of conductive material filled in the first penetrating hole or the second penetrating holes.

Abstract: A wiring board includes a substrate having a first penetrating hole penetrating through the substrate, a first through-hole conductor formed on the inner wall of the first penetrating hole, a filler filled inside the first conductor and forming a second penetrating hole, and a second through-hole conductor formed in the second penetrating hole, a first conductive circuit formed on a first surface of the substrate; a second conductive circuit formed on a second surface of the substrate; a first conductive portion formed on one end of the second penetrating hole, and a second conductive portion formed on the opposite end of the second penetrating hole. The first conductor is connecting the first and second circuits. The second conductor is connecting the first and second conductive portions. The first circuit has the thickness which is set greater than the thickness of the first conductive portion.